The “June gloom” isn’t over. It’s merely on hiatus. And a brief one at that.

The National Weather Service says Monday’s daytime high at Lindbergh Field will reach 70 for the first time in four days, causing overnight clouds to burn off quickly. There’s an outside chance the warmth will last into Tuesday. But the marine layer then returns and will linger for the rest of the week, shrouding some beach areas until early afternoon.

“We’re going back into a seasonal pattern; cool at the coast, warm inland,” says Cindy Palmer, a weather service forecaster. “It could last that way for a week or more.”

Temperatures across inland valleys will be in the 80s. Summer lightning isn’t expected. But the fire danger remains high because of the heat and lack of rain, the weather service says.